Chrysler PowerTech engine

From Dodge Wiki

The PowerTech was a new engine family for Chrysler, and was not based on the Chrysler A engine as existing Chrysler V8 were. A 4.7 L V8 came first, fitted in the Jeep Grand Cherokee, and a 3.7 L V6 version debuted in 2002 for the Jeep Liberty. The PowerTech V6 and V8 were direct replacements for Chrysler's LA family in the early 2000s, and were also used in the Dodge Ram. They were not used in any cars, but were reserved for truck and SUV use. They are also known as Next Generation Magnum in Dodge applications.

Chrysler used the "PowerTech" name on other engines used in Jeep vehicles, including the AMC Straight 6 engine (from 1996 onwards) and the 2.4 L four cylinder engine. The PowerTech V6 and V8 engines are produced at the Mack Avenue Engine Complex in Detroit, Michigan. An E85 compatible version of the PowerTech engine was developed and used in numerous Chrysler vehicles.

Contents

4.7

The 4.7 liter version was the first of this family, appearing in the 1999 Jeep Grand Cherokee. The displacement is 287 cubic inches (4698 cc) with a bore of 3.66 in (93 mm) and a stroke of 3.405 in (86.5 mm). It has a cast iron block and aluminum "almost Hemi" heads with two valves per cylinder. It uses a chain-driven Overhead camshaft. It originally produced 235 Horsepower (175 Watt) and 295 Torque (400 Newton metre) of Torque.

2008 Revisions

The 2008 Dodge Dakota and Ram pickup trucks, Dodge Durango and Chrysler Aspen SUV's, Jeep Grand Cherokee, and Jeep Commander will come with a Corsair version of the FFV 4.7 L engine, with dual spark plugs per cylinder, a new slant / squish combustion system design, and 9.8:1 compression, raising power to 290-310 hp and 320-334 ft·lbf of torque. See Allpar's page on the latest 4.7 L.